if your database system is based on Oracle 19c version (which should be by now since 19c is the long term supported release) and your database system is using Oracle Spatial component (to check if its installed is through querying DBA_REGISTERY view) you might be hitting ORA-600 error.
if you check your alert log and trace files you might be hitting: ORA-600 [kdsgrp1-kdsgrp]
Oracle is releasing “Spatial patch bundles” that gets released AFTER the regular RU (Release Update) that gets released on quarterly basis.
This error ORA-600 [kdsgrp1-kdsgrp] is an indication of potential index corruption (domain index). So you will need t apply the latest Spatial Patch bundle associated with your current version and then rebuild indexes.
of course its always a good idea to open a case with Oracle with ORA-600 related errors, and for reference: Doc ID 2514624.1